Recording control device, recording control system, recording control method, and computer program

Abstract

A recording control device includes: a photographic data acquisition unit that acquires photographic data from a camera that photographs a periphery of a vehicle; a moving object detection unit that detects a moving object from the photographic data acquired by the photographic data acquisition unit while the vehicle is parked; and a recording control unit that correlates detection information of the moving object with the photographic data, records the correlated information in a recording unit as a data file that is capable of being overwritten, and when overwriting of the data file in the recording unit becomes necessary, performs the overwriting by reducing the priority of overwriting on the data file in which the moving object is detected.

What is claimed is: 
     
       1. A recording control device comprising a processor configured to:
 acquire photographic data from a camera that photographs a periphery of a vehicle; 
 detect a moving object from the photographic data acquired while the vehicle is parked; 
 detect an event to the vehicle; 
 correlate detection information of the moving object with the photographic data to yield correlated information; 
 loop-record the correlated information in a recording unit as a data file that is capable of being overwritten; 
 in response to detection of the event, save, in the recording unit as the data file that must not be overwritten, the photographic data for a period defined at a time when the event is detected; 
 determine whether to perform overwriting of the data file in the recording unit in response to a recording capacity of a loop-recording area for the data file that is capable of being overwritten being full; 
 in response to determining that the overwriting of the data file in the recording unit is to be performed, perform the overwriting by reducing priority of the overwriting on the data file in which the moving object is detected in a manner that the priority is lower as the data file is temporally closer to the time when the event is detected; and 
 in response to determining that the overwriting of the data file in the recording unit is not to be performed, record the data file. 
 
     
     
       2. The recording control device according to  claim 1 , wherein the processor performs the overwriting by reducing more the priority of the overwriting on the data file that is temporally closer to the time before or after the event is detected. 
     
     
       3. The recording control device according to  claim 1 , wherein the processor performs the overwriting by reducing the priority of the overwriting on the data file that is temporally before the event is detected. 
     
     
       4. A recording control system comprising:
 the recording control device according to  claim 1 ; 
 a camera that photographs the periphery of the vehicle; and 
 a recording unit that records the data file. 
 
     
     
       5. A recording control method comprising:
 acquiring photographic data from a camera that photographs a periphery of a vehicle; 
 detecting a moving object from the photographic data acquired while the vehicle is parked; 
 detecting an event to the vehicle; 
 correlating detection information of the moving object with the photographic data to yield correlated information; 
 recording the correlated information in a recording unit as a data file that is capable of being overwritten; 
 in response to the detecting of the event, saving, in the recording unit as the data file that must not be overwritten, the photographic data for a period defined at a time when the event is detected; 
 determining whether to perform overwriting of the data file in the recording unit in response to a recording capacity of a loop-recording area for the data file that is capable of being overwritten being full; 
 in response to determining that the overwriting of the data file in the recording unit is to be performed, performing the overwriting by reducing priority of the overwriting on the data file in which the moving object is detected in a manner that the priority is lower as the data file is temporally closer to the time when the event is detected; and 
 in response to determining that the overwriting of the data file in the recording unit is not to be performed, recording the data file. 
 
     
     
       6. A non-transitory computer readable recording medium storing therein a computer program that causes a computer operating as a recording control device to perform operations, the operations comprising:
 acquiring photographic data from a camera that photographs a periphery of a vehicle; 
 detecting a moving object from the photographic data acquired while the vehicle is parked; 
 detecting an event to the vehicle; 
 correlating detection information of the moving object with the photographic data to yield correlated information; 
 recording the correlated information in a recording unit as a data file that is capable of being overwritten; 
 in response to the detecting of the event, saving, in the recording unit as the data file that must not be overwritten, the photographic data for a period defined at a time when the event is detected; 
 determining whether to perform overwriting of the data file in the recording unit in response to a recording capacity of a loop-recording area for the data file that is capable of being overwritten being full; 
 in response to determining that the overwriting of the data file in the recording unit is determined to be performed, performing the overwriting by reducing priority of the overwriting on the data file in which the moving object is detected in a manner that the priority is lower as the data file is temporally closer to the time when the event is detected; and 
 in response to determining that the overwriting of the data file in the recording unit is determined not to be performed, recording the data file.